Xubuntu clDevicesNum returned error, no GPUs usable

[Gazza1]

I get these errors on a fresh install

 [2014-06-01 16:37:48] Started cgminer 3.7.2
 [2014-06-01 16:37:48] clDevicesNum returned error, no GPUs usable
 [2014-06-01 16:37:48] No devices detected!
 [2014-06-01 16:37:48] Waiting for USB hotplug devices or press q to quit


I use this guide to a T.  It worked perfectly a few months ago when I did it before.

http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-linux/

What am I missing?

-----
I get these on all the rigs; 5 gpus each

* 0. 01:00.0 AMD Radeon HD 7900 Series
  1. 02:00.0 AMD Radeon HD 7900 Series
  2. 04:00.0 AMD Radeon HD 7900 Series
  3. 05:00.0 AMD Radeon HD 7900 Series
  4. 06:00.0 AMD Radeon HD 7900 Series

ERROR - X needs to be running to perform AMD Overdrive(TM) commands

[Gazza1]

This is pissing me off, I've tried everything I can think of

[Gazza1]

I figured it out for whoever else has this issue; I had to make an xinit file

http://bitcoin.stackexchange.com/questions/20739/help-running-r9-290x-graphics-card-headless-in-linux

[Gazza1]

Also.

This guide is substantially better.  I reformatted again and it was a breeze this time around using this.  I didn't have to do any extra crap;

http://blog.truepps.com/complete-guide-to-mine-scrypt-on-xubuntu-13-10/

Just use that guide but with the newest drivers of course, and then the extra auto load scripts on the bottom of the other guide if you want them.